The scotch yoke pneumatic actuator is widely used in various industries because of its unique advantages. Do you know the working principle of the fork actuator?

Compressed air enters the cylinder and drives the fork-type piston to move. The linear motion of the piston is changed into the rotary motion of the disc through the fork-type piston. The disc drives the output shaft to rotate, thus realizing the control of the valve.

Classification of scotch yoke pneumatic actuator
According to the different types of action, it can be divided into single-acting and double-acting fork-acting pneumatic actuators. The switch action of the actuator is driven by air source, that is, the double-acting fork-type pneumatic actuator, while the only open action is driven by air source, and the single-acting fork-type pneumatic actuator is reset by spring.
According to the different structure, it can be divided into single cylinder piston type and double cylinder piston type.
According to the different material, it can be divided into aluminum alloy, stainless steel, carbon steel and so on.
When the torque requirement is higher than 7000Nm, rack-and-pinion actuators are often not cost-effective. For this reason, it is generally recommended to choose high-power fork-type pneumatic actuator in the selection of pneumatic actuator, which can provide higher torque output.
The symmetrical and inclined steel fork mechanism of high-power fork pneumatic actuator allows two types of torque output characteristics. Among them, inclined steel fork mechanism has very high starting torque and low operating torque, which is suitable for butterfly valve control; symmetrical steel fork mechanism has more balanced torque curve, which is mainly suitable for ball valve and cock valve control.
Understanding the working principle of the scotch yoke pneumatic actuator can be better applied by us. If you have the requirement of fork pneumatic actuator, please contact us.